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Lactoferrin immunomodulation of DTH response in mice
Jeffrey K Actor1, Shen-An Hwang, Margaret Olsen
1Department of Pathology and Laboratory Medicine-Program in Molecular Pathology, University of Texas-Houston Medical School, UTHHSC, 77030, USA. Jeffrey.K.Actor@uth.tmc.edu
International Immunopharmacology
|April 19, 2002
Summary
Bovine Lactoferrin acts as a potent adjuvant, significantly enhancing cell-mediated immunity (CMI) and delayed-type hypersensitivity (DTH) responses. This suggests its potential for developing novel vaccines and immunological research.
Area of Science:
- Immunology
- Vaccine Development
- Adjuvant Research
Background:
- Nontoxic adjuvants are crucial for vaccine development, particularly those inducing cell-mediated immunity (CMI).
- Bovine Lactoferrin, a host defense molecule, was investigated for its adjuvant properties.
Purpose of the Study:
- To evaluate Bovine Lactoferrin as an adjuvant for inducing delayed-type hypersensitivity (DTH) responses.
- To assess Lactoferrin's effect on immune cell cytokine and chemokine production.
Main Methods:
- Mice were immunized subcutaneously with varying doses of Lactoferrin and sheep red blood cells (SRBC).
- DTH responses were measured, and peritoneal cells/macrophages were stimulated in vitro with Lactoferrin.
- Cytokine (TNF-alpha, IL-12, IL-15) and chemokine (MIP-1alpha, MIP-2) production was analyzed.
Main Results:
- Lactoferrin significantly enhanced DTH responses in a dose-dependent manner.
- Admixing Lactoferrin with a suboptimal SRBC dose increased DTH responses over 17-fold.
- Lactoferrin stimulated macrophages to produce TNF-alpha, IL-12, IL-15, MIP-1alpha, and MIP-2.
Conclusions:
- Bovine Lactoferrin demonstrates significant adjuvant properties, effectively enhancing DTH responses.
- Lactoferrin promotes the production of cytokines and chemokines, suggesting a role in stimulating CMI.
- These findings support Lactoferrin's potential as a novel adjuvant for vaccine development.